Method and apparatus for L3-aware switching in an Ethernet passive optical network
US7443850B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2005 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Nov 11, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/0071
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention provides a system that performs layer 3 (L3) aware switching in an Ethernet passive optical network (EPON) which includes a central node and at least one remote node. During operation, the system maintains a set of mapping information which indicates a correspondence relationship between a logical link identifier of a remote node, a medium access control (MAC) address for a subscriber coupled to the remote node, and an IP address for the subscriber. Upon receiving a packet which contains an IP address, the system selectively attaches a proper logical link identifier to the packet based on the mapping information and the IP address contained in the packet, thereby allowing only one proper remote node to receive the packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.